add possibility of autoscaling. add injection of predeploy templates

devops/azure/chart/templates/deployment.yaml

@@ -23,7 +23,9 @@ metadata:
   name: {{ .Values.deployment.name }}{{ $nameSuffix }}
 {{ include "os-wellbore-ddms.namespace" . | indent 2}}
 spec:
+  {{- if not .Values.isAutoscalingEnabled }}
   replicas: {{ .Values.replicaCount }}
+  {{- end }}
   selector:
     matchLabels:
 {{ include "os-wellbore-ddms.commonLabels" . | indent 6}}

devops/azure/chart/templates/hpa.yaml

+# Copyright 2021 Schlumberger
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+{{- if .Values.isAutoscalingEnabled }}
+apiVersion: autoscaling/v2beta2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: os-wellbore-ddms{{ include "os-wellbore-ddms.name-suffix" . }}
+  namespace: osdu
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: os-wellbore-ddms{{ include "os-wellbore-ddms.name-suffix" . }}
+  minReplicas: {{ .Values.minReplicaCount }}
+  maxReplicas: {{ .Values.maxReplicaCount }}
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: 50
+  behavior:
+    scaleDown:
+      stabilizationWindowSeconds: 150
+      policies:
+      - type: Pods
+        value: 2
+        periodSeconds: 30
+    scaleUp:
+      stabilizationWindowSeconds: 10
+      # Either add 50% of current pods or 4 pods (whichever is higher) every 10 seconds until the the HPA stabilizes
+      selectPolicy: Max
+      policies:
+      - type: Pods
+        value: 6
+        periodSeconds: 10
+      - type: Percent
+        value: 50
+        periodSeconds: 10
+{{- end }}
\ No newline at end of file

devops/azure/chart/values.yaml

@@ -24,9 +24,11 @@ deployment:
   keyvaultUrlPropertyName: ENV_KEYVAULT
   name: os-wellbore-ddms
 
-replicaCount: 2
 nodepool: services
 isAutoscalingEnabled: false
+maxReplicaCount: 2
+minReplicaCount: 2
+replicaCount: 2
 
 resources:
  limits:

devops/azure/template/deploy-stages.yaml

@@ -26,6 +26,10 @@ parameters:
         #       # TODO: The following templates needs to be injected as parameters
         #       authenticationTemplate: ${{ getImageTemplate }}
         #       authenticationTemplateParameters: ${{ getImageTemplateParameters }}
+        #       preDeployTemplates:
+        #       - template: ${{ my_template }}
+        #         parameters: ${{ my_template_parameters }}
+        #       - ...
         #     getImageTemplate: ${{ authenticationTemplate }}
         #     getImageTemplateParameters: ${{ authenticationTemplateParameter }}
 
@@ -51,6 +55,11 @@ stages:
               - template: steps-define-variables.yaml
               - template: ${{ provider.getImageTemplate }}
                 parameters: ${{ provider.getImageTemplateParameters }}
+              - ${{ each preDeployTemplate in environment.preDeployTemplates }}:
+                - template: ${{ preDeployTemplate.template }}
+                  parameters:
+                    ${{ each parameter in preDeployTemplate.parameters }}:
+                      ${{ parameter.key }}: ${{ parameter.value }}
               - template: steps-push-image.yaml
                 parameters:
                   azureSubscription: $(SERVICE_CONNECTION_NAME)